Photographic film and plate holder



July 31, 1923. 1,463,710

R. c. MATSON PHOTOGRAPHIC FILM AND PLATE HOLDER Filed April 25. 1921 2 sheets sfieet 1 R. C. MATSON PHOTOGRAPHI C FILM AND PLATE HOLDER July 31, 1923. 1,463,710

Filed April 25 1921 2 Sheets-Sheet 2 m e we m as Application filer. n,

To ail whom it may concern:

Be it known that 1, Ram: Crninnns son, citizen of the United States and a resident of the city of Portland county of hlultnomah, and State of Oregon, have in vented a certain new and useful improvement in Photographic Film and Plate Holders, of which the following is specification.

My invention relates to holders for photographic negatives, and other plates and lilms, such holders as are used for holding the plates and films while being worked upon, or otherwise handled The object of my invention is to provide a simple and convenient holder adapted for use with plates and films varying greatly in size.

It is further my object to provide a photographic plate and film holder which may be adjusted to accommodate the particular size of plate or film for which it is to be used; that is to say, the user knowing the size of the plate or film can adjust his holder in advance to such particular size l attain my object in a holder which consists substantially of the rectangular slreleton metal frame, provided with an intermediate adjustable cross-bar, and the latter and one end of the frame being provided with laterally extensible arms, the extremities of which are provided with holding clamps.

My invention also includes means for holding a plate at its ends on the cross-bar of one end of the frame and said intermediate adjustable cross-bar; also includes means for determining the required positioning of said intermediate cross-bar and said extensible arms for spacing the said holdingelements relatively to the size of the plate or film to be secured on the holder.

ll Iy invention also includes means for securinq the adjustable parts in place as adjusted.

Other features of my invention are hereinafter fully described and illustrated the accompanying drawings.

The latter represent as follows:

Fig. 1 shows a perspective elevation one side of my photographic plate holder;

Fig. 2 is a fragmentary end elevation looking in the direction indicated by the arrow 2 of Fig. 3; showing the lower crossbar of the rectangular main frame and the lal' AT S O N C l EQRTLAND, GBEGON.

PLATE :lerial No.

inter icdiate "justable crossbar slidali-ly mounted on i e sides of the main frame;

gmentary rear side elevation r as the main frame and a intern diate adjustable crossmounted on the sides of the main frame; this view also illustrates the neans provided for securing the interniediadjustable cross in place as posiragmentary detail illustrating of the cam means provided the. intermediate adjustable alae N l :3 is a rag]. entary section taken on the hiol'en line 5 of Fig. 3 looking in the 1' red by the arrow; this view t the construct1on herein- 3 IDQDJELI'Y detail of one of itension arms illustrating clamps provided on such and S are details of an adjustable hool: provided on the upper end cross-bar of the main frame, for suspending the latter from a peg or wire.

My holder consists of a skeleton metal main frame preferably of elon ate shape, having its site bars substantially longer than the end cross bars.

Cn the side bars a, a of the main frame is sl bly mounted an intermediate adjustable or -bar Z) :he ends of which are provided with shoes 0, c sliding on the sides of the main frame. On the adjustable intermediate cross bar Z; are slidably mounted two extension arms (Z. (Z, th outer extremities c of which are formed so as to provide supports for film clamps f. The construction of these clamps isbestseen from Figs. 5 and 6. It comprises a pair jaws g and g of which the latter s compressible against the former by means of a cam lever 71. The members g, g of the clamps are respectively made with perpendicular )ortions iso as to facilitate the cl rapi g of a film between them, as illustrated in T 3, in which represents portion of the film.

The means for securingthe adjustable tcrmediate cross-bar l) in place consist cams pivoted in the extensions 0 or shoes 0. The extension arms (Z, and cl slide in guides Z (see Fig. 1) provided on said intermediate adjustable cross arm 6 and the extension arms (Z, cl are held in position as adjusted by set-screws m.

The lower end cross-bar a of the main frame a is also provided with guides at in which slide extension arms 1), p which bear on their extremities clamps 9 similar 1n construction and operation 'to the clamps of the extension arms (Z, d and the latter are secured in place as adjusted by set screws 7".

Means are provided for determining the required positions of the intermediate cross bar .7) relatively to the desired spacing of the film-holding clamps lengthwise of the main frame.

Such means may consist of graduations in inches, as represented by the cross lines a; andnumerals adjacent the same. For the same purpose each of the extension arms cl and d", and p and p, are also provided with graduations as represented at i and 6, thus films of Various sizes, both with respectto their length or their breadth, may be sup ported by my plate holder, and the frame may be definitely adjusted in advance to accommodate the particular film.

The back of the cross-bar a of the main frame 9, and likewise the adjustable intermediate cross-arm Z) are respectively provided with channels or grooves as a a, as more clearly shown in Fig. 2 for holding photo plates. v

The top-cross bar a of the main frame is provided with hinged arms 0, 1: adapted for being laterally extended as illustrated in Fig. l, and serving as a support for the frame; w being stopsholding the arms in their'extended position.

The top cross bar a is also provided with a hook 00 provided with a collar against which bears an expansion coil-spring 2, and the shank of the hook is provided with a pin 3 adapted for seating in the groove at so that the hook may be adjusted and secured in place in either one of its two positions shown in Figs. 7 and 8. v

The illustrations of my photographic plate and film holder in the drawings is to be understood as giving merely its essential principles of operation; the details of con struetion being variable so long as said principles are adhered to.

I claim: 7

1. A photo plate an'dfilm ho der comprising a rectangular frame, an intermediate adjustable cross-bar movably supported on the two sides of the frame, extension arms carried by one end of said intermediate adj ustable cross-bar and the corresponding end of the cross-bar constituting one end of the frame, and holding clamps on the extremities of said extension arms.

2. A photo plate and film holder compris ing a rectangular frame, an intermediate adjustable cross-bar movably supported on two sides of the frame, extension arms carried by one end of said int *rmediate adjustable cross-bar and the corresponding end of the cross-bar constituting one end of the frame, holding elements on the extremities of said extension arms, such holding elements being located on the front of the frame, and other holding elements carried by said interme diate adjustable cross-bar and said crossaim of one end of the frame, such holding elements being located on the back of the frame.

3. A photo plate and film holder comprising a rectangular frame, an intermediate adj ustable cross-bar movably supported on two sides of the frame, extension arms by one end of said intermediate adj. i cross-bar and the correspondin end of the cross-bar constituting one end of the frame, holding elements on the extremities of said extension arms, and means for determining the required positioning ofsaid intermediate cross-bar and said extension arms th reby spacing said holding elements relatively to the size of the plate or film to be secured on the holder.

4:. A photo plate and film holder comprising a rectangular frame, an intermediate adjustable cross-bar movably supported. on two sides of the frame, extension arms carried by each end of said intermediate adjustable cross-bar and of the cross-bar constituting one end of the frame, holding means on the extremities of said extension arms, and means for determining the required positioning of said intermediate cross-bar and said. extension arms, thereby spacing said holdlng elements relatively to the size of the plate or film to be secured on the holder.

5; A photo plate and film holder comprising a rectangular frame,.an intern'iediate adj ustable cross-bar movably supported on two sides of the frame, guides on one end of said intermediate adjustable cross-bar and the corresponding end of cross-bar constituting one end of the frame, extension arms adjustable in such guides holding clamps on the extremities of said extension arms, and

means for determining the required positioning of said intermediate cross-bar and said extension arms, thereby spacing said holding elements relatively to the size of the plate or filin to be secured on the holder.

RALPH CHARLES MATSON. 

